A popular marriage between the words "Christmas" and "Hanukkah" celebrated mostly by interfaith (Christian and Jewish) couples. Sources of this word date back to the 1800s and not the television show the OC (look it up).

Happy Chrismukkah: Eight days of presents, followed by one day of many presents.

A satiric term for the merging of December holiday traditions within a mixed-faith family, or by a person who celebrates both Christmas and Hanukkah. Chrismukkah is also an ironic, alternative winter holiday, much like the Seinfeld-derived "Festivus."

The term has been used by some in the Jewish community as a wry commentary on the growing commercialization of Hanukkah in reaction to the dominance of Christmas in American culture.

In 2005, the Jewish Museum of Berlin presented a show called Chrismukkah and sourced it's origin to assimilated German-Jews of the late 1800s who called the holiday "Weihnukkah." Weihnachten is the German word for Christmas.

In the United States, Chrismukkah caught on in the late 1990s after a faux press release written by school teacher Michael Nathanson was read on NPR's Car Talk. It was widely circulated through email and Internet joke websites. Chrismukkah gained pop-culture fame after being featured in the FOX television program The O.C. A character Seth Cohen is often mistakenly credited with "inventing" Chrismukkah.